| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [adv] a week | 272 |
|
| 2 | [adv] than [adv] a | 141 |
|
| 3 | [adv] than a week | 24 |
|
| 4 | than [adv] a week | 15 |
|
